Precreate AFS target directory in upload

This works around missing parent directories in AFS, since rsync
will create the target directory but not its parent directories. In
cases where the parent directory does not yet exist, it's nice to
create it automatically first, if we can.

Change-Id: Ia136ea3a416d6085d1f6e277b4c071573c5660e4

roles/upload-afs-synchronize/tasks/main.yaml

@@ -1,3 +1,9 @@
+- name: Precreate AFS target directory
+  # rsync will create the target directory but not its parent directories
+  # which may not yet exist
+  file:
+    path: "{{ afs_target }}"
+    state: directory
 - name: Upload contents to AFS
   synchronize:
     src: "{{ afs_source }}"